Collapsible core or form



March 5, 1929. o. J. KUHLKE COLLAPSIBLE CORE 0R FORK ori inal Filed Nov. 5, 1924 4 Sheets-Sheet l INVEf/TOR. 071-0 J Aim/(E.

ATTORNEY March 5, 1929.

o. J. KUHLKE COLLAPSIBLE coma on Foal 4 Sheets-Sheet 2 Original Filed Nov. 5, 1924 ATTORNEY.

MllCh 5, 1929. I 0, J, KU coLuIPsIBLE com: on FOR! Original Filed Nov. 5, 1924 4 Sheets-Sheet? 3 mvsurbk Orrb I J M lL/ri.

Mmh 1929- o. J. KUHLKE 1,704,294

'COLLAPSIBLE com on Pond ori inal Fi e Nov. 1924 4 Sheets-Sheet 4 0770. f M/A/LKE BY 0 fa A TTORIYE Y.

Patented Mar. 5, 1929.

UNITED STATES PATENT OFFICE.

OTTO J. KUHLKE, F AKRON, OHIO, ASSIGNOR TO THE KUHIQKE MACHINE COMPANY,

OF AKRON, OHIO, A CORPORATION OF OHIO.

COLLAPSIIBLE coma on Form.

Application filed November 1924, Serial No. 747,913. Renewed August 15, 1927.

This invention relates to collapsible cores or forms for the building of pneumatic automobile tires, which are characterized by the provision of collapsing mechanism which is permanently attached to the several torm sections so that the form may be collapsed and assembled with rapidity and ease. It is a purpose of the invention to improve upon prior constructions for this general purpose and to devise a simple, inexpensive and easily operated device. a

In the drawings there is shown one form or embodiment of the invention, it being understood that the showing is for the purpose of illustrating principles of the invention and not for limiting the invention beyond the fair scope of the appended claims.

In the drawings:

Figure 1 is a side elevation of the core in assembled condition;

Figure 2 is a similar view showing the core at the termination of thc'first collapsing movement Figure 3 is a section on the line of Figure 1;

Figure 4 is a section on the line 4-4 of Figure 2; i y

Figure 5 is a plan View of the core in collapsed position; and

Figure (3 is a section on the line 66 of Figure 1.

This application is a continuation as to common subject matter, of my prior application, Serial No. 735,265, filed September 2, 192i.

The core of the present invention is characterized and distinguished from prior core constructions in that it makes use of a single key section which is supported at a fixed distance from the core shaft or support, while the remainder of the core sections, which are connected together to form a unit, are moved toward and from the axis of the core so as to carry the completed tire away from the key section. It is also characterized by the fact that the unit of core sections is movable in a substantially straight line in an oblique direction to the plane of the core, so that the sections will shift to a position outside of but parallel to the original core plane. Vhen the sections carrying the tire have been removed as described, certain of the sections are folded inwardly, being hinged for that purpose to a centrally located or rigid section, the movement of wardly oi the plane thereof. The hinging of the movable sections is so arranged that one section will fold over the other hinged section. When the several core sections have been moved as indicated, the tire is stripped from the core, which may then be reassembled.

The central core shaft or sup ort is indicated by the numeral 1, whidh the shaft of the tire machine or tire stand. On the end of the shaft is secured acentral late 2, the face of which is inclined at an oblique angle to the plane of the core and one edge of which is provided with a 'rack 3. The upper end of the late is formed with a yoke 4 provided with two lugs 5 to which is secured the stationary key section 6 which, in the present embodiment of the invention, is rigidly mounted. H

Upon the frontof the plate 2 is mounted a movable slide or su porting plate providedwith flanges 8 whic I embrace the plate 2 and by which the unit referred to above is guided so as to be movable in an oblique direction with respect to the original core plane. In order to move the slide 7 over the central plate, a pinion 9 is mounted in the slide in position to engage the rack, being provided with suitable means by which it can be rotated. A spring operated pin or dog 10 is secured in the slide and is adapted to engage holes 11 andf12 in the central plate to lock the group of core sections in assembled and collapsed position, respectively.

The sections of the core, other than the rigid key section, are carried by the slide 7,

may be and are constituted by a plurality of sections I 14, 15, and 16, of which intermediate section 15 is rigid, being attached to the slide 7 by means of lugs 17 formed thereon. The sections 1 1 and 16 are hinged to the intermediate section so that they can be swung inwardly. The preferred form of hinge is indicated at 18, the hinge being arranged so that each section, in moving inwardly toward the center of the core, will also move outwardly from the plane of the core. The position of the swinging sections is shown in Figure 5, in which the section 14 is moved inwardly first and the section 16 is then moved so as to overlap or rest upon the section let; it will be observed that for this purpose the hinges 17 are arranged at oblique angles to the plane of the core.

llioys 19 may be provided between the tree ends of the sections 14: and 1G and the key section.

.lhe operation of the device will be readily understood. l l 'hen the tire completed upon the core and is ready to bestripped tlierejl roni, the operator having withdrawn the pin will enter the hole l2 and lock theni in the position shown in l io'ure 2. The remaiiuler ot the core is now tree of the key section and the sect ll and it: may be z-uvuug inwardly and the tire removed.

ltis obvious that changes and modilications may be made in specilic embodim nts of the invention. The number and arrangement of the core set may be altered and manner of hing)? the swinging sect-ions upon the central ed section may be chz'inged. Other variations may be introduced within the scope of "the invention as will be understooiil )y those skilled in the art. 7

It will be understood'that certain principles oi the invention may be applied to tire building terms oi varvuw shapes and are not necessarily limited to .18 rounded core section. l t here the term core is used throughout the specification and claims-i, it

will t l.ll1ll(3'='-'-llG-Oll that the term is used broadly and may cover any tire buildinform.

hat is claimed is:

1. in a collapsible term, a key section means to support the key section at a tired di"*"oce from the term supp and a plu v of sections hinged together and c ustnutmg a unit, and means to more the unit toward and "from the term and angularly with respect thereto.

2. In a collapsible core, a stationary hey sect on and, a phurality oi sections hinged together and constituting unit, and me. tomo've the unit toward and from the core axis and obliquely with respect thereto.

3. In a collapsible core, Siittiiltil'ff key section and a, pliu-ality ol sections con toting a unit, and means for moving the unit toward and from the axis of the core in an oblique direction.

l. In a collapsible term, a key section and a plurality oi sections conslil" ing a. unit the unit being movable in a that ward and from the il In a collapsible core, a plurality of core sections constitutin a portion of the core and forming a unit, and a guide arranged at an angle to the original core plane and o'er which the unit is movable while reinainii parallel to the original core plane. 7; ln a co lapsible core, a plurality of core sections coi .i' uting a portion of the core and forming a unit, and a guide arranged at an obliipie angle to the original core plane and over which the unit movable.

a collapsible term, a plurality of form siconstituting a portion ot the form and lormiug a unit a guide arraugciil at an. oblique angle to the original torin plane and means to move the unit upon the guide.

5) in a collapsible core, a plurality of core actions constituting a portion of the core and forming a unit, a guide arranged at an oblique angle to the original core plane, means to more the unit upon the guide, and

it). in a collapsible core, a stationary plurality of sect-ions which are and constitute a unit a or said unitarranged at an oblique .e of the core and means he unit along rality of core sections, a supporting plate :lor the core, one of the sections being a he section and carried by the plate, the ren'iaining sections being .liingedly connected together as agroup, a guiding formation on the plate and diverging from the plane of the core, and means carried by the group o't sect-ions having sliding engagement with the Formation.

1.2. A collapsible core comprisingij a plurality oi core sections a supporting plate lior the core, certain of said core sections being hii'iged together as a group, a guiding formation on the plate and diverging from the plane of the core, and means carried by the group oil. sections having sliding engage meet with the formation.

A collapsible core comprising a core section, an arm attached to the core section and projecting toward the center of the core but diverging therefrom, said arm supporting the core section for sliding movement and intermediate core sections pivoted to and carried by the first named section.

i l. A collapsible core comprising a core section, an arm attached to the core section and projecting toward the center of the core but diverging therefrom, and an additional core section hinged. to one end of the first named core section, the arm supporting the core sections for sliding movement.

15. A collapsible tire building form comprising a plurality of form sections which said guidcway to Sll llll) ill are hinged together in a group, a central supporting late-for the form, and means to support the group of sections for sliding movement upon the plate.

16. A collapsible tire building form comprising a plurality of form sections which constitute a group and are angularly hinged together, a central supporting plate for the term, and means to support the group of sections for sliding movement upon the plate.

17. A collapsible form comprising a form section, an arm attached to the form sec tion and extending in an angular direction toward the axis of the form, and a second form section carried by the first named form section.

18. A collapsible form comprising a form section, means to support the form section for movement in a fixed path toward the axis of the form in an angular direction, and a second form section carriedby the first named form section.

19. A collapsible core comprising a core section, a guiding arm attached to the core section and extending in an angular direction toward the axis of the core, a second core section carried by the first named core section, and a third core section supported independently of the other sections.

20. A collapsible core comprising a core section, a guiding arm attached to the core.

section and extending in an angular direction toward the axis of the core, two core sections carried by the first named core sections, and a remaining section supported independently of the other sections.

21. A collapsible core construction embodying a core section, means for guiding the core section in a fixed path at an angular direction toward the core axis, and additional core sections hinged to the ends of the first named section, the hinges being at an angle to the original core plane. Y

22. A collapsible core construction embodying a core section, means for guiding the core section in a fixed path at an an lar direction toward the core axis, an a second core section hinged to the end of the first named section, the hinge being at an angle to the original core plane.

In a collapsible form construction, a key section, means for securing the key section in fixed relation to the form support, and a group of form sections, means for moving the group of form sections toward and from the center of the form, and guiding means for the group. i v

24. In a collapsible form construction, a key section, means for securin the-key sec tion in fixed relation to the orm support, and a group of form sections movable toward and from the center of the form, and guiding means for the group. 1

in a collapsible form construction, a stationary key section, and group of form sections which are hinged to ether, and means for moving the group 0? form sections relatively to the key section.

26. In a collapsible form construction, a stationary key section, a group of form sections which is composed of a rigid section and swinging sections pivoted thereto, and

means for moving the group of form sections toward and from the center of the form.

27. In a collapsible form construction, a

form shaft, a plate secured thereon, a key section on the end of the plate, a group of form sections, and a slide movable over the plate to which the group is attached.

o'r'ro J. KUHLKE. 

